Engineering Worksheet: Prototypes and Fair Tests

Engineering lesson 5: Prototypes and fair tests · Set 497 · 40 questions

Engineer's tip (Test fairly, record honestly): Prototype = an early model made to test an idea. Fair test: change one thing, keep the rest the same, measure and record every result. Mean of three tests = (first + second + third) ÷ 3.

1. 1.🧪 Is it good or poor testing to skip writing results? (a) poor testing (b) good testing
2. 2.🧪 The first prototype held 240 g. After the team improved it, the new prototype held 380 g. How many more grams did it hold?
3. 3.🧪 Why do engineers make prototypes? (a) to avoid testing (b) to sell them at once (c) to decorate a room (d) to test ideas cheaply
4. 4.🔍 Which is the odd one out? (a) use the same load (b) record every result (c) measure the same way (d) change lots at once
5. 5.True or false: to skip writing results is poor testing. (a) True (b) False
6. 6.True or false: to change lots at once is good testing. (a) True (b) False
7. 7.🧪 Is it good or poor testing to change only one thing? (a) good testing (b) poor testing
8. 8.🧪 A paper bridge was tested three times. It held 230 g, 140 g and 200 g. What is the mean (average) load it held, in grams?
9. 9.🧪 Three prototype bridges were tested with the same method. Design A held 240 g, design B held 190 g and design C held 140 g. Which design was the weakest? (a) design A (b) design B (c) design C
10. 10.🔢 To build and test a straw bridge, which is the LAST step? (a) sketch three ideas (b) choose and draw one (c) strengthen the weak part (d) load it with coins
11. 11.🧪 A paper bridge was tested three times. It held 290 g, 170 g and 200 g. What is the mean (average) load it held, in grams?
12. 12.True or false: to use the same load is good testing. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) test it only once (b) skip writing results (c) use a new load each time (d) repeat each test
14. 14.True or false: to repeat each test is good testing. (a) False (b) True
15. 15.🧪 Three prototype bridges were tested with the same method. Design A held 270 g, design B held 320 g and design C held 220 g. Which design was the strongest? (a) design C (b) design B (c) design A
16. 16.🔢 To build and test a straw bridge, what comes right after “build it with straws”? (a) choose and draw one (b) read the challenge rules (c) strengthen the weak part (d) load it with coins
17. 17.🧪 Is it good or poor testing to measure the same way? (a) good testing (b) poor testing
18. 18.🧪 The first prototype held 230 g. After the team improved it, the new prototype held 360 g. How many more grams did it hold?
19. 19.🧪 A paper bridge was tested three times. It held 390 g, 300 g and 300 g. What is the mean (average) load it held, in grams?
20. 20.🧪 Three prototype bridges were tested with the same method. Design A held 290 g, design B held 340 g and design C held 240 g. Which design was the weakest? (a) design A (b) design B (c) design C
21. 21.🧪 A paper bridge was tested three times. It held 440 g, 280 g and 330 g. What is the mean (average) load it held, in grams?
22. 22.🔢 To build and test a straw bridge, which is the FIRST step? (a) choose and draw one (b) build it with straws (c) read the challenge rules (d) load it with coins
23. 23.🧪 Is it good or poor testing to repeat each test? (a) good testing (b) poor testing
24. 24.🔍 Which is the odd one out? (a) use the same load (b) measure the same way (c) record every result (d) guess, do not measure
25. 25.🧪 A paper bridge was tested three times. It held 330 g, 220 g and 320 g. What is the mean (average) load it held, in grams?
26. 26.🧪 Three prototype bridges were tested with the same method. Design A held 190 g, design B held 290 g and design C held 240 g. Which design was the weakest? (a) design A (b) design B (c) design C
27. 27.🧪 Is it good or poor testing to test it only once? (a) good testing (b) poor testing
28. 28.🧪 Three prototype bridges were tested with the same method. Design A held 160 g, design B held 110 g and design C held 210 g. Which design was the weakest? (a) design B (b) design A (c) design C
29. 29.🔍 Which is the odd one out? (a) use a new load each time (b) measure the same way (c) change lots at once (d) hide a failed test
30. 30.🧪 A paper bridge was tested three times. It held 240 g, 120 g and 90 g. What is the mean (average) load it held, in grams?
31. 31.True or false: to guess, do not measure is poor testing. (a) True (b) False
32. 32.True or false: to skip writing results is good testing. (a) False (b) True
33. 33.🔍 Which is the odd one out? (a) change lots at once (b) test it only once (c) hide a failed test (d) change only one thing
34. 34.🧪 The first prototype held 80 g. After the team improved it, the new prototype held 220 g. How many more grams did it hold?
35. 35.🔢 To build and test a straw bridge, which comes first: “read the challenge rules” or “sketch three ideas”? (a) sketch three ideas (b) read the challenge rules
36. 36.True or false: to use a new load each time is good testing. (a) False (b) True
37. 37.🧪 A paper bridge was tested three times. It held 320 g, 230 g and 380 g. What is the mean (average) load it held, in grams?
38. 38.🧪 Three prototype bridges were tested with the same method. Design A held 210 g, design B held 260 g and design C held 310 g. Which design was the strongest? (a) design A (b) design B (c) design C
39. 39.🧪 In a fair test, how many things do you change at a time? (a) all of them (b) none (c) one (d) two
40. 40.True or false: to test it only once is poor testing. (a) True (b) False

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